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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.1
- 수록면
- 543 - 550 (8page)
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초록· 키워드
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The decrease in the fracture toughness of ferritic steels in a reactor pressure vessel is an important factor in determining the lifetime of a nuclear power plant. A surveillance program has been in place in Korea since 1979 to assess the structural integrity of RPV steels. In this work, the surveillance data were collected and analyzed statistically in order to derive the empirical relationship between the embrittlement and strengthening of irradiated reactor pressure vessel steels. There was a linear relationship between the yield strength change and the transition temperature shift change at 41 J due to irradiation. The proportional coefficient was about 0.5°C/MPa in the base metals (plate/forgings). The upper shelf energy decrease ratio was non-linearly proportional to the yield strength change, and most of the data lay along the trend curve of the US results. The transition regime temperature interval, ΔTT, was less than the US data. The overall change from irradiation was very similar to the US results. It is expected that the results of this study will be applied to basic research on the multiscale modeling of the irradiation embrittlement of RPV materials in Korea.
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참고문헌 (20)
참고문헌 신청
ASTM Standards / 1993 / Standards Test Methods and Definitions for Mechanical Testing of Steel Products / ASTM A370-92, American Society for Testing and Materials
ASTM Standards / 1993 / Standards Test Methods for Notched Bar Impact Testing of Metallic Materials / ASTM E23-91a, American Society for Testing and Materials
E. D. Eason / 2007 / A Physically Based Correlation of Irradiation-Induced Transition Temperature Shifts for RPV Steels
F. A. Nichols / 1966 / heory of Radiation Embrittlement and Recovery of Radiation Damage in Ferritic Steels / Philosophical Magazine 14 : 335 ~
G. R. Odette / 1985 / Relationship Between Irradiation Hardening and Embrittlement of Pressure Vessel Steels / 12th International Symposium of the Effects of Radiation on Material
ASTM Standards / 1993 / Standards Test Methods for Notched Bar Impact Testing of Metallic Materials / ASTM E23-91a, American Society for Testing and Materials
E. D. Eason / 2007 / A Physically Based Correlation of Irradiation-Induced Transition Temperature Shifts for RPV Steels
F. A. Nichols / 1966 / heory of Radiation Embrittlement and Recovery of Radiation Damage in Ferritic Steels / Philosophical Magazine 14 : 335 ~
G. R. Odette / 1985 / Relationship Between Irradiation Hardening and Embrittlement of Pressure Vessel Steels / 12th International Symposium of the Effects of Radiation on Material
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